Method of manufacturing metallic torsels.



- v J. E. SONNIBR. METHOD OF MANUFACTURING METALLIC TOBS ELS.

APPLIOATION FILED NOV. 24, 1913.

1,104,714; Patented July 21,1914.

7 2 SHEETS-SHEET 1.

Figiek Fig.6

//VVENTOR 17115555 5 c JE-mv ERNEST Son/M51? J. E. SONNIBR. METHOD OF MANUFACTURING METALLIC TOBSELS.

, APPLICATION FILED no-v. 24, 1913. 1,1 4,714, Patented July 21,191

" 2 sums-sum 2.

Fig. 8

WITNESSES /N|/ENTOR JEfl/Y ERzvEsTSmvrna UNITED STATES l PATENT T JEAN ERNEST SONIIIER, OI PARIS, FRANCE.

METHOD OF MANUFACTURING METALLIC TOBSEIB.

Specification of Ijmtters latent.

Patented July 21, 1914.

Application filed November 24, 1918. Serial No. 802,720.

' sheets of metal.

The process consists in rolling the edges of the rectangular sheet metal 1n the direction of its length so as to form margmal tubes leaving between them a middle strip more or less wide-0t undeformed metal, in

folding or shaping the middle strip according toany desired number (zero being included) of undulations, in afterward bringing together both the marginal tubes in such a way as to squeeze the undulatlons of the -middle strip, and lastly in imparting to the whole a twisting movement around the lon- Figures 1 to 4 show two steps in the manu facture of a torsel or twisted column with two strands. Figs. 1 and 3 are views in elevation. Fig. 2 is a cross section of Fig. 1;

1 are transverse sections showing two ste s in y the making of a six-strand torse Fig. & is a cross section of Fig. 3. Figs. 5 to 7 show stages in the manufacture of a three strand torsel or wreathed column. Figs. 5 and 6 are cross sections. Fig. 7 is an elevation. Figs. 8 to 10 show the steps in the manufacture. of a four-strand torsel or wreathed column. Figs. 8 and 9 are cross sections and Fig. 10 is an elevation.- Figs. 11 and 12 are cross sections showing two steps in the manufacture of a five-strand torsel or wreathed column. Figs. 13 and 14 .1 wreathed column. Figs. 15 and 16 aretransverse sections showing a modification m the ?manner of making four-strand torsels or wreathed columns.

In order to make a two-strand torsel or wreathed column, I take a rectangular sheet of metal of which I roll the longitudinal edges in such a way as to form two marginal tubes at situated one on one face, the other on the other face of the sheet (Figs. 1 and 2). Between the two tubes athere remains an undeformed strip of metal Z). There is afterward imparted to the whole a twisting movement around the longitudinal axis of the sheet whichaction gives the two-stranded torsel or wreathed column shown in Figs.

'3 and 4. Ihe presence of the strip 6 enables the twisting to take place without deforming in any way the tubes at, the appearance of the torsel or wreathed column is as bold as the strip 6 is wide. It will be seen that the two-strand torsel or wreathed column corresponds to the number. zero of undulations of the middle strip 6.

In order to make a three-strand torsel or wreathed column, I first roll the edges of the sheet on the same face of the sheet and arrange between the two marginal tubes a, a strip 6 of which the width is slightly greater than the full circumference of a tube a. I shape the strip 6 in such a way as to form one undulation b (Fig. 5) and then bring together the tubes a so as to close in or crush the base of the undulation b (Fig. 6). It is then suflicient to impart to the whole a twisting movement about its longitudinal axis, n order to obtain the three-strand torsel or wreathed column shown in Fig. 7.

To make a four-strand torsel or twisted column, the tubes a are rolled on opposite faces of the sheet: the middle strip 6 is folded into two undulations b b (Fig. 8) the tubes a. are brought together (Fig. 9) and the twisting action is applied to the whole around its longitudinal axis. In this way the four-stranded torsel or wreathed column is obtained which is shown in 10.

- Figs. 11 and 12 show themanner of making a torsel or wreathed column having five strands (three undulations b b b), and Figs. 13 and 14 show the manner of constructing a six-strand torsel or wreathed column (four'undulations b b b b). It will be seen that the method is general in'its application.

Figs. 15 and 16 illustrate a modified way of constituting the torsel or wreathed pillar with four strands. I take two sheets of metal A B and A B prepared as for the two-strand torsels; these two sheets are assembled by means of a double hook A B composed of a metal sheet prepared in the same way as the sheets A B and A B but of which the marginal tubes are of larger diameter (Fig. 15). The whole is afterward subjected to a twisting process around the longitudinal axis. In this Way a torsel or twisted column is obtained of which the section is shown. in Fig. 16 and of which the external appearance corresponds with that of Fig. 10. This modified method enables me to employ metal sheets of difierent appearance, that is to say, to vary the decorative and artistic effect obtained.

Torsels or twisted or wreathed columns constructed according to this invention possess, together with a decorative appearance, a rigidity and a resistance of quite a remarkable character. They behave almost the same as profiled metal, angle iron and the like and can sustain and support con-- siderable loads in the longitudinal direction by reason of the connection or tie which exists for the whole length of the strands.

What I claim and desire to secure by'Letters Patent of the United States is:

1. A method of constructing torsels from sheet metal, which comprises rolling the longitudinal edges of a sheet metal blank into f0rmed portion of the blank, undulating the latter portion of the blank, pressing the tubular margins together to:v close in the base of the undulation and twisting the blank about its longitudinal axis, substantially as described.

3. A method of constructing torsels from sheet metal which comprises rolling the longitudinal edges of a sheet metal blank intomarginal tubes spaced apart by an undeformed portion of the blank, i1npart ing a plurality'of undulations to the latter port on, pressing the tubular margins to- .gether to close in the bases of the undulations and twisting the blank about its longitudinal. axis. I

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

JEAN ERNEST SONNIER. Witnesses:

HANSON C. Coxn, LoN PEILLET. 

